Fresh, never frozen quail may be tough to find. Have you checked the Ranch 99 in Van Nuys? If you want to do special order then I would try the butcher at Vicente Foods in Brentwood or maybe the Bristol Farms on Westwood Blvd at Ohio (just north of Santa Monica Blvd.).

There is a small Armenian Market on Coldwater Canyon and either Victory or Vanowed (I think Vanowed) on the sout east corner called Anush. They carry fresh quail that is already marinated but maybe they can accommodate you and just sell you fresh that has not been marinated if you order in advance.